ABB OTDC100US22 Non-Fusible Disconnect Switch

ABB OTDC100US22 Non-Fusible Disconnect Switch is a four‑pole DC switch‑disconnect rated 100 A at up to 1000 V DC, designed to safely isolate high‑voltage DC circuits in photovoltaic and other DC power systems. As a non‑fusible device, it provides independent, simultaneous opening of all four poles to guarantee complete circuit isolation for maintenance or emergency shutdowns, without relying on a fuse link. The OTDC family is engineered for robust DC switching performance in solar inverter interfaces, DC distribution panels, and energy‑storage installations, delivering a compact form factor and dependable operation where space is at a premium. With ABB’s emphasis on true DC switching, OTDC100US22 supports harsh operating environments typical of PV installations and is compatible with common mounting configurations used in the OTDC range (including base mounting in many installations). This 100 A, 1000 V DC rating places OTDC100US22 in the high‑reliability segment of PV disconnects, enabling safe isolation of DC strings and feeders while supporting straightforward integration into control and protection schemes in commercial or industrial power architectures.